Self-audit is blind to its own blind spots

A short reply to Uncle Bob Martin, who had suggested asking an agent to audit its own work after a long unattended session. The objection is clean: the same model has the same inductive biases, so the gaps it missed the first time are the gaps it will miss again, and the audit pass ends up reinforcing the failure modes rather than catching them.

The prescription is an adversarial model with different architecture and training distribution. That is exactly the reasoning behind Copilot’s rubber duck agent, which deliberately runs the critic on a different model from the one being critiqued. Related: Uncle Bob on not reading agent code.